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Method for in-situ preparation of Cr3C2 and/or Mo2C powder by using molten salt
The invention relates to the technical field of preparation of transition metal carbide powder materials, in particular to a method for in-situ preparation of Cr3C2 and/or Mo2C powder in through molten salt disproportionation reaction. The method comprises directly forming a raw material mixture according to the stoichiometric ratio, with the structural formula of transition metal carbide being MxCy, M being a transition metal element Cr and/or Mo, and C being carbon; reacting the raw material mixture in molten salt in an inert atmosphere, and cooling after the reaction is finished to obtain aproduct mixture; and removing the molten salt in the product mixture to obtain the Cr3C2 and/or Mo2C powder material. The method can solve one or more of the problems of high synthesis temperature, complex preparation process and equipment, high cost, uncontrollable morphology and size and the like of the existing transition metal carbide, and has the advantages of rapidness, high efficiency, energy conservation, environmental protection, low cost, easiness in realizing large-scale production and the like.
本发明涉及过渡金属碳化物粉体材料制备技术领域，具体来讲，涉及一种利用熔盐歧化反应原位制备CrC和/或MoC粉体的方法。所述方法包括：根据化学计量比，直接形成原料混合物，过渡金属碳化物的结构式为MC，其中，M为过渡金属元素Cr和/或Mo，C为碳；惰性气氛下，将原料混合物在熔融熔盐中反应，反应结束后冷却，得产物混合物；去除产物混合物中的熔盐，得CrC和/或MoC粉体材料。本发明能够解决现有的过渡金属碳化物合成温度高、制备工艺和设备复杂且成本高、形貌和尺寸不可控等问题中的一项或多项，并且具有快速、高效、节能、环保、成本低廉又易于实现大规模生产等优点。
Method for in-situ preparation of Cr3C2 and/or Mo2C powder by using molten salt
The invention relates to the technical field of preparation of transition metal carbide powder materials, in particular to a method for in-situ preparation of Cr3C2 and/or Mo2C powder in through molten salt disproportionation reaction. The method comprises directly forming a raw material mixture according to the stoichiometric ratio, with the structural formula of transition metal carbide being MxCy, M being a transition metal element Cr and/or Mo, and C being carbon; reacting the raw material mixture in molten salt in an inert atmosphere, and cooling after the reaction is finished to obtain aproduct mixture; and removing the molten salt in the product mixture to obtain the Cr3C2 and/or Mo2C powder material. The method can solve one or more of the problems of high synthesis temperature, complex preparation process and equipment, high cost, uncontrollable morphology and size and the like of the existing transition metal carbide, and has the advantages of rapidness, high efficiency, energy conservation, environmental protection, low cost, easiness in realizing large-scale production and the like.
本发明涉及过渡金属碳化物粉体材料制备技术领域，具体来讲，涉及一种利用熔盐歧化反应原位制备CrC和/或MoC粉体的方法。所述方法包括：根据化学计量比，直接形成原料混合物，过渡金属碳化物的结构式为MC，其中，M为过渡金属元素Cr和/或Mo，C为碳；惰性气氛下，将原料混合物在熔融熔盐中反应，反应结束后冷却，得产物混合物；去除产物混合物中的熔盐，得CrC和/或MoC粉体材料。本发明能够解决现有的过渡金属碳化物合成温度高、制备工艺和设备复杂且成本高、形貌和尺寸不可控等问题中的一项或多项，并且具有快速、高效、节能、环保、成本低廉又易于实现大规模生产等优点。
Method for in-situ preparation of Cr3C2 and/or Mo2C powder by using molten salt
利用熔盐原位制备CrC和／或MoC粉体的方法
LIU HUIJUN (author) / YANG LINGXU (author) / ZENG CHAOLIU (author)
2020-04-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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